Just add position:sticky
to th & td first-child.
th:first-child, td:first-child
{
position:sticky;
left:0px;
background-color:grey;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<table class="table">
<tr>
<th>TIME</th>
<th>Company</th>
<th>Company</th>
<th>Company</th>
<th>Company</th>
<th>Company</th>
<th>Company</th>
<th>Contact</th>
<th>Country</th>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Germany</td>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Centro comercial Moctezuma</td>
<td>Francisco Chang</td>
<td>Mexico</td>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Ernst Handel</td>
<td>Roland Mendel</td>
<td>Austria</td>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Island Trading</td>
<td>Helen Bennett</td>
<td>UK</td>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Laughing Bacchus Winecellars</td>
<td>Yoshi Tannamuri</td>
<td>Canada</td>
</tr>
<tr>
<td>11:40 </td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Magazzini Alimentari Riuniti</td>
<td>Giovanni Rovelli</td>
<td>Italy</td>
</tr>
</table>